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