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