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