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