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