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