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