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