One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,12)(5,6)(7,10)(8,13)(11,14)(15,16)(17,18,23,26)(19,27,29,24)(20,30,31,21)(22,25,28,32)(33,34)(35,39)(36,40)(37,45)(38,42)(41,46)(43,48)(44,47)(2,6)(7,9)(8,12)(14,15)(17,19,23,29)(18,24,26,27)(20,25,31,32)(21,28,30,22)(33,35,38,36)(34,39,42,40)(37,43,46,44)(41,47,45,48)(2,6)(3,10)(4,13)(14,15)(20,31)(21,30)(22,28)(25,32)(33,34,38,42)(35,40,36,39)(37,45,46,41)(43,47,44,48)(1,3,5,10)(2,7,6,9)(4,11,13,16)(8,14,12,15)(17,20,23,31)(18,21,26,30)(19,25,29,32)(22,24,28,27)(33,36,38,35)(34,40,42,39)(37,44,46,43)(41,48,45,47)(1,2)(3,9)(4,8)(5,6)(7,10)(11,15)(12,13)(14,16)(17,21)(18,20)(19,28)(22,29)(23,30)(24,25)(26,31)(27,32)(33,34)(35,40)(36,39)(37,41)(38,42)(43,48)(44,47)(45,46) involution — undirected(1,4)(2,8)(3,11)(5,13)(6,12)(7,14)(9,15)(10,16)(17,22,23,28)(18,25,26,32)(19,21,29,30)(20,24,31,27)(33,37,38,46)(34,41,42,45)(35,43,36,44)(39,47,40,48)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.