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