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