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