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