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