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)(17,18,23,26)(19,29,31,43)(20,33,36,44)(21,28,22,27)(24,37,40,32)(25,38,42,35)(30,39,34,41)(45,46,48,47)(1,3)(2,6)(4,10)(5,9)(7,14)(8,13)(11,16)(12,15)(17,19)(18,24)(20,34)(21,37)(22,32)(23,31)(25,41)(26,40)(27,43)(28,29)(30,36)(33,45)(35,46)(38,47)(39,42)(44,48) involution — undirected(3,9)(6,13)(10,15)(14,16)(17,20)(18,25)(19,30)(21,35)(22,38)(23,36)(24,39)(26,42)(27,33)(28,44)(29,45)(31,34)(32,46)(37,47)(40,41)(43,48) involution — undirected(3,9)(6,13)(10,15)(14,16)(18,26)(19,31)(25,42)(27,28)(30,34)(32,37)(33,44)(46,47) involution — undirected(1,4,5,12)(2,7,8,11)(3,10,9,15)(6,14,13,16)(18,26)(24,40)(25,42)(27,28)(29,43)(33,44)(39,41)(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.