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