One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,8)(6,9)(7,10)(11,12)(13,14)(15,16)(17,18,23,26)(19,24,22,20)(21,29,31,25)(27,28,30,32)(33,34,38,41)(35,42,36,39)(37,45,46,40)(43,47,44,48)(1,3)(2,4)(5,11)(6,7)(8,12)(9,10)(13,16)(14,15)(17,19,23,22)(18,24,26,20)(21,30,31,27)(25,28,29,32)(33,34)(35,42)(36,39)(37,40)(38,41)(43,48)(44,47)(45,46)(1,2)(3,10)(4,7)(5,8)(6,9)(11,16)(12,15)(13,14)(17,20)(18,22)(19,26)(21,28)(23,24)(25,30)(27,29)(31,32)(33,35,38,36)(34,39,41,42)(37,43,46,44)(40,47,45,48)(1,2)(3,4)(5,13)(6,9)(7,10)(8,14)(11,16)(12,15)(17,20)(18,19)(21,28)(22,26)(23,24)(25,27)(29,30)(31,32)(33,34)(35,39)(36,42)(37,40)(38,41)(43,47)(44,48)(45,46) involution — undirected(1,4)(2,7)(3,9)(5,12)(6,10)(8,15)(11,13)(14,16)(17,21,23,31)(18,25,26,29)(19,27,22,30)(20,28,24,32)(33,36,38,35)(34,39,41,42)(37,44,46,43)(40,47,45,48)(1,5,6,14)(2,8,9,13)(3,11,7,15)(4,12,10,16)(17,22,23,19)(18,24,26,20)(21,30,31,27)(25,32,29,28)(33,37)(34,40)(35,43)(36,44)(38,46)(39,47)(41,45)(42,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.