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