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