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