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