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