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