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